1.2.1: Fix position of the crop mask on iPad in some cases.

Includes #59.

1.2.0: The powerful subclasses.

Extracts and exposes some internal methods for subclasses.

1.1.5: Small fixes.

• fix the condition of displaying an image (after setting a new original image)
• update test of displaying an image (after setting a new original image)
• add support for the navigation bar with the custom shadow image

1.1.3: Fix for preferred status bar state.

Fixes #48.

1.1.2: Support for App Extension.

Fixes #44.

1.1.1: Handle scale of images.

Fixes #41.

1.0.0: Initial stable API release.

Includes the main functionality.